Due to the increasing number of cases of cyberbullying among adolescents, the need for a valid, reliable instrument to assess the prevalence of cyberbullying in Mexican adolescents has become evident. This study aimed to analyze the psychometric properties of the Cyberbullying Test (Garaigordobil, 2013) in a sample of 1155 high school students from five educational establishments in western Mexico; ages ranging from 15 to 19 years old. A confirmatory factor analysis was carried out, which resulted in asatisfactory adjustment to the three-factor model, according to the original instrument, and adequate factor loads. Moreover, the three scales that constitute the instrument showed adequate internal consistency. The results of the study are di...